參數(shù)資料
型號(hào): XRT91L80IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
中文描述: TRANSCEIVER, PBGA196
封裝: 12 X 12 MM, STBGA-196
文件頁數(shù): 24/45頁
文件大?。?/td> 359K
代理商: XRT91L80IB
XRT91L80
2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
PRELIMINARY
xr
REV. P1.1.0
22
The on-chip phase/frequency detector can also be used to remove the jitter from a noisy reference signal that
is applied to the REFCLKP/N inputs. In this case, the LOOPTM_NOJA pin should be set "Low", the
VCXO_SEL set "High", and the LOOPTM_JA pin set "Low". In this configuration, the REFCLKP/N signal is
used as the reference to the de-jitter PLL and the de-jittered output of the phase locked VCXO is used as the
timing reference to the CMU. Table 9 provides configuration for selecting the loop timing and reference de-jitter
modes.
T
ABLE
9: L
OOP
TIMING
AND
REFERENCE
DE
-
JITTER
CONFIGURATIONS
VCXO_SEL
LOOPTM_JA
LOOPTM_NOJA
A
CTION
0
0
0
Normal mode
0
0
1
Loop timing without de-jitter VCXO
1
0
0
REFCLKP/N reference de-jitter VCXO
1
1
0
Loop timing with de-jitter VCXO
F
IGURE
13. L
OOP
T
IMING
M
ODE
U
SING
AN
E
XTERNAL
C
LEANUP
VCXO
VCXO_LOCK
LOOPTM_JA
RXIP
RXIN
Phase
Detect
CDR
M
Loop Filter
Div by 16
or 32
Clk
Data
~
~
VCXO
XRT91L80
CPOUT
2.488/2.666GHz
Retimer
LOOPTM_NOJA
LOCKDET_CMU
VCXO_SEL
Charge
Pump
M
1
0
1
0
PISO
M
0
1
2.488/2.666GHz
CMU
TXOP
TXON
VCXO_INP
VCXO_INN
REFCLKP
REFCLKN
ALTFREQSEL
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XRT91L80IB-F 功能描述:總線收發(fā)器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
XRT91L81 制造商:EXAR 制造商全稱:EXAR 功能描述:2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L81IB 制造商:EXAR 制造商全稱:EXAR 功能描述:2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82 制造商:EXAR 制造商全稱:EXAR 功能描述:2.488/2.666 GBPS STS-48/STM-16 SONET/SDH TRANSCEIVER
XRT91L82ES 功能描述:總線收發(fā)器 Transceiver RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel